Water-based ink for stencil printing and stencil printing method

Abstract

There is disclosed a water-based ink for stencil printing that includes an associative thickener that is liquid at 20° C. By using this ink, the blurring of the printed image that occurs on recommencing printing after the printing machine has been sitting in an unused state can be eliminated quickly.

1 . A water-based ink for stencil printing, comprising a non-ionic associative thickener that is liquid at 20° C.  
   
   
       2 . The water-based ink for stencil printing according to  claim 1 , wherein the non-ionic associative thickener comprises a urethane group within a molecular skeleton.  
   
   
       3 . The water-based ink for stencil printing according to  claim 1 , wherein a quantity of the non-ionic associative thickener is within a range from 1 to 15% by weight.  
   
   
       4 . The water-based ink for stencil printing according to  claim 1 , further comprising an unsaturated carboxylic acid-based water-soluble polymer.  
   
   
       5 . A stencil printing method that uses the water-based ink for stencil printing according to  claim 1.